/*
 * Copyright 2009 XueSong Guo.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package cn.webwheel.utils;

/**
 * 错误页面结果。
 */
public class ErrorResult extends SimpleResult {

    private int statusCode;
    private String msg;

    /**
     * 构造方法。
     * @param statusCode 错误代码，如404、500等
     */
    public ErrorResult(int statusCode) {
        this.statusCode = statusCode;
    }

    /**
     * 构造方法
     * @param statusCode 错误代码，如404、500等
     * @param msg 错误消息
     */
    public ErrorResult(int statusCode, String msg) {
        this.statusCode = statusCode;
        this.msg = msg;
    }

    /**
     * 通过{@link javax.servlet.http.HttpServletResponse#sendError(int, String)}输出错误结果页面
     * @throws Exception 任何异常
     */
    public void render() throws Exception {
        if (msg == null) {
            context.getResponse().sendError(statusCode);
        } else {
            context.getResponse().sendError(statusCode, msg);
        }
    }
}
